Unit 690

The Bears Paw Mountains and Eagle Buttes provide distant reference points and the highest glassing terrain. Closer navigation landmarks include Discovery Butte, Steamboat Rock, Studhorse Butte, and Pilot Rock—scattered prominences that break the horizon and aid orientation. The Marias and Missouri Rivers are critical geographic anchors, with major bends and rapids (Pablo, Holmes, Castle Bluff) marking drainage positions.

Lonesome Prairie and Wilson Desert describe the character of open expanses. Multiple named benches (Runyan, Cummings, Greens, Eightmile) and divides (Bentel, Taylor) serve as ridge systems for glassing. Kenilworth and Big Sandy are the nearest towns for staging and information.

Elevation ranges from roughly 2,300 feet along the Missouri River to about 6,900 feet in the distant Bears Paw Mountains, though most hunting occurs in the 2,500–4,500 foot band of prairie, benches, and low breaks. This is sparse-forest country dominated by sagebrush plains, grasslands, and scattered junipers on north-facing slopes and benches. The Bears Paw and Eagle Butte areas introduce some ponderosa pine and Douglas-fir on higher slopes, but the character remains open.

Benches like Runyan, T U, Ragland, and Cummings provide elevated platforms that break the monotony and create wind-swept terrain. The overall landscape is working prairie—short grass, sage, and yucca interspersed with coulee systems that provide shade and travel corridors.

Over 3,300 miles of road network exist in the unit, but ownership distribution is heavily private, creating a patchwork of access. The fair accessibility badge reflects this reality: roads exist, but gated private land limits penetration. US Highway 2 forms the northern boundary and provides main access; secondary roads branch south into the interior, but many dead-end or cross private property.

Cow Creek, Suction Creek, and Little Suction Creek valleys offer some corridor access. Hunting pressure concentrates along roads and river breaks where public access exists. The vastness of the unit and sparse settlement mean solitude is achievable for hunters willing to work—either by walking off-road into remote coulees or by understanding private land access.

Winter conditions can make roads impassable, shrinking effective access windows.

Unit 690 encompasses portions of Hill, Blaine, and Chouteau Counties in north-central Montana, bounded by the Hill-Liberty County line to the west, the Missouri River to the south and east, and US Highway 2 to the north. The Marias River enters from the southwest, defining the western boundary before meeting the Missouri near Loma. This is expansive country—roughly 1,500-2,000 square miles based on the boundary description—spanning from prairie flats to the scattered peaks of the Bears Paw Mountains and Eagle Buttes.

Most terrain sits below 5,000 feet elevation, creating a landscape fundamentally shaped by river systems and coulees carved through high plains.

Water is limited and concentrated. The Marias River enters from the southwest and remains reliable year-round, as does the Missouri River corridor along the eastern boundary. Eagle Creek, Little Sandy Creek, and Gorman Creek are secondary drainages with seasonal flow.

Scattered reservoirs and lakes (Four O'Clock, Newhouse, White Bear, Grasshopper, Ross, Halfway, Sage, Prairie Lakes) provide reliable water but are few. Named springs (Cecil, Polish, Gasparage, Bills, Juniper, Bear Paw, White Bear, Lohse) are scattered across the unit, though their reliability varies. Numerous coulees and draws (Sage Coulee, Spring Coulee, Fisher Coulee, Dry Fork Coulee) channel water seasonally.

Summer hunting requires identifying reliable water sources; spring hunting benefits from snowmelt in drainages.

Unit 690 is classic Montana pronghorn country. The open prairie, benches, and coulee systems provide ideal habitat for speed goats, which use this terrain year-round. Early season (September) finds pronghorn in high benches and ridge country where winds are favorable and visibility is maximum.

Rut season (mid-September to October) concentrates animals in accessible valleys and coulee heads where does congregate. Late season (October-November) pushes animals to lower, more sheltered country along river breaks and in brush-filled draws. Glassing from high benches—Runyan, Cummings, Greens, Eightmile—is essential; pronghorn can be spotted from 3+ miles in clear conditions.

Approach along coulees for cover; understand wind patterns dictated by river valleys. Water strategy matters less than typical: pronghorn drink sparingly, but knowing which reservoirs and springs concentrate animals aids planning. This terrain rewards patience and optics over aggressive pushing.